1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Draining Fuel from Tank

Discussion in '2nd Gen. Tacomas (2005-2015)' started by RWL, Sep 22, 2022.

  1. Sep 22, 2022 at 5:20 PM
    #21
    Dm93

    Dm93 Test Don't Guess

    Joined:
    Mar 3, 2015
    Member:
    #150066
    Messages:
    4,315
    Gender:
    Male
    Texas
    Vehicle:
    2014 DC OR 6spd 4x4
    Predator tube steps, Ranch Hand grill guard, Magnaflow CatBack exhaust, Toyota tool box & bed mat, 2LO Module by @Up2NoGood, Rearview Compass/Temp Mirror.
    If you had a V6 all you would need to do is unplug the fuel pump resistor and apply power to the Black/Red wire but the 4cyl doesn't use the resistor.
     
  2. Sep 22, 2022 at 5:24 PM
    #22
    stevesnj

    stevesnj Well-Known Member

    Joined:
    Apr 22, 2012
    Member:
    #77385
    Messages:
    3,457
    Gender:
    Male
    South Jersey/Philly Area
    Vehicle:
    1996 Land Cruiser 80 Series
    HOw about a drill pump?
     
    whatstcp likes this.
  3. Sep 22, 2022 at 5:33 PM
    #23
    Dm93

    Dm93 Test Don't Guess

    Joined:
    Mar 3, 2015
    Member:
    #150066
    Messages:
    4,315
    Gender:
    Male
    Texas
    Vehicle:
    2014 DC OR 6spd 4x4
    Predator tube steps, Ranch Hand grill guard, Magnaflow CatBack exhaust, Toyota tool box & bed mat, 2LO Module by @Up2NoGood, Rearview Compass/Temp Mirror.
    Remember you have to have the key on or the EFI relay will not be energized and there will be no power at the COPN relay.
     
  4. Sep 22, 2022 at 5:34 PM
    #24
    Dm93

    Dm93 Test Don't Guess

    Joined:
    Mar 3, 2015
    Member:
    #150066
    Messages:
    4,315
    Gender:
    Male
    Texas
    Vehicle:
    2014 DC OR 6spd 4x4
    Predator tube steps, Ranch Hand grill guard, Magnaflow CatBack exhaust, Toyota tool box & bed mat, 2LO Module by @Up2NoGood, Rearview Compass/Temp Mirror.
    It's very difficult to pull fuel through the factory pump no matter what kind of pump you are using, you may get a slight trickle but that's about it.
     
    stevesnj likes this.
  5. Sep 22, 2022 at 6:47 PM
    #25
    RWL

    RWL [OP] Member

    Joined:
    Dec 21, 2017
    Member:
    #239074
    Messages:
    17
    Gender:
    Male
    Vehicle:
    2007 Tacoma 4x4
    Trailer hitch
    Although I'm working outdoors, I'd be a little concerned about the sparks from the drill motor. The risk is probably low however. The pump in the truck is already there and it seems like that's what people who own vehicles from other manufacturers are doing to drain fuel tanks since you can't get inside the filler neck to siphon gas any more.
     
  6. Sep 22, 2022 at 6:49 PM
    #26
    RWL

    RWL [OP] Member

    Joined:
    Dec 21, 2017
    Member:
    #239074
    Messages:
    17
    Gender:
    Male
    Vehicle:
    2007 Tacoma 4x4
    Trailer hitch
    Yup. I had the key on. I was following the procedure I saw in a couple of videos on youtube. They're all similar, but none of the ones I found were dealing with a 2nd gen Tacoma.
     
  7. Sep 22, 2022 at 7:13 PM
    #27
    stevesnj

    stevesnj Well-Known Member

    Joined:
    Apr 22, 2012
    Member:
    #77385
    Messages:
    3,457
    Gender:
    Male
    South Jersey/Philly Area
    Vehicle:
    1996 Land Cruiser 80 Series
    I mean instead of all this you could just bite the bullet on the gas and move on?
     
    Alexely999, reallifedog and Nordberge like this.
  8. Sep 22, 2022 at 7:22 PM
    #28
    RWL

    RWL [OP] Member

    Joined:
    Dec 21, 2017
    Member:
    #239074
    Messages:
    17
    Gender:
    Male
    Vehicle:
    2007 Tacoma 4x4
    Trailer hitch
    At this point I have enough out of the tank that I wouldn't feel too bad if I don't take any more out, but I'm curious if it is possible to use the fuel pump to remove fuel from the tank on Tacomas like it is on other brands and what I may have done wrong when I tried to do it. I'll follow DM93's suggestions tomorrow to see if I can make it work just for the proof of concept at this point. Someone else will make use of the information in the future and I will have learned something.
     
    stevesnj likes this.
  9. Sep 22, 2022 at 7:42 PM
    #29
    Dm93

    Dm93 Test Don't Guess

    Joined:
    Mar 3, 2015
    Member:
    #150066
    Messages:
    4,315
    Gender:
    Male
    Texas
    Vehicle:
    2014 DC OR 6spd 4x4
    Predator tube steps, Ranch Hand grill guard, Magnaflow CatBack exhaust, Toyota tool box & bed mat, 2LO Module by @Up2NoGood, Rearview Compass/Temp Mirror.
    I know it can be done, I do it fairly often on vehicles with easily accessed fuel pump relays to empty the tank when replacing fuel pumps if they will still run at all.
    Only difference is I use dedicated relay tools instead of shoving a pin or wire in the slot.

    Relay Bypass Master Kit
    https://www.amazon.com/dp/B00JSYBF4E

    Lisle 69300 Master Relay Test Jump Set
    https://www.amazon.com/dp/B00CRQSYY4
     
    reallifedog likes this.
  10. Sep 22, 2022 at 7:57 PM
    #30
    nd4spdbh

    nd4spdbh Well-Known Member

    Joined:
    Oct 7, 2013
    Member:
    #114055
    Messages:
    12,284
    Gender:
    Male
    SoCal
    Vehicle:
    13 DCSB TRD OR v6 Auto
    Crimp a male spade connector to a 2ft piece of wire. touch one end to the positive of the battery and take the spade connector and For a:
    • V6 truck - pull the fuel pump relay - supply 12v to pin 4 of the socket
    • i4 truck - pull the cpon relay - supply 12v to pin 3 of the socket
    The fuel pump will turn on and start flowing fuel.

    Literally as simple as that.
     
    Dm93 and 6 gearT444E like this.
  11. Sep 23, 2022 at 5:04 AM
    #31
    fixnfly

    fixnfly Well-Known Member

    Joined:
    Oct 1, 2011
    Member:
    #64450
    Messages:
    646
    Gender:
    Male
    First Name:
    Mike
    S.W.PA
    Vehicle:
    05 Access cab 4.0 4WD
    Years ago I took a truck out for a test drive and while sitting in traffic, I noticed the fuel light was on and the needle was below E.
    I was few miles from the dealership when the truck started to sputter but I made it into a parking lot and then the truck shut off.
    Called the dealership to tell them where the truck was and had my wife come pick me up. I would have bought that truck but I'm really glad I didn't because somebody that cheap most likely neglected the truck over the years and replaced parts with whatever cheap Chinese junk they could find.:frusty:
     
    steelcity2 and stevesnj like this.
  12. Sep 23, 2022 at 7:47 AM
    #32
    tacobp

    tacobp Well-Known Member

    Joined:
    Nov 16, 2021
    Member:
    #382308
    Messages:
    74
    Gender:
    Male
    First Name:
    Bob
    North Carolina
    Vehicle:
    09 Tacoma, 2.7 automatic
    Installed a Pop n Lock,,That's it !..Bone stock
    I remember the old days ! Guess you can't just siphon out the gas from the filler ?
     
  13. Sep 23, 2022 at 10:44 AM
    #33
    Nordberge

    Nordberge Active Member

    Joined:
    Jul 13, 2011
    Member:
    #59802
    Messages:
    39
    Gender:
    Male
    Vehicle:
    2011 TRD Off-Road PreRunner
    Yup. Depending on where you are, all that work is costing you time to save ~65$. I say, take it to a straight stretch of road and do some 0-60 tests until you used up what's left in the tank and then turn it in.
     
  14. Sep 23, 2022 at 10:52 AM
    #34
    10thMTNgrunt

    10thMTNgrunt This is the way, step inside.

    Joined:
    Dec 24, 2021
    Member:
    #385415
    Messages:
    630
    Gender:
    Male
    First Name:
    Stirling
    Vehicle:
    2013 TRD Sport
    Am I missing something here or is it just Friday?
     
    whatstcp and 6 gearT444E like this.
  15. Sep 23, 2022 at 11:51 AM
    #35
    reallifedog

    reallifedog wat.

    Joined:
    Dec 11, 2014
    Member:
    #144054
    Messages:
    181
    Gender:
    Male
    First Name:
    Jordan
    Denver
    Vehicle:
    08 Tacoma TRD OR
    Dm93 likes this.
  16. Sep 23, 2022 at 12:09 PM
    #36
    whatstcp

    whatstcp currently drunk so don't listen to me

    Joined:
    Aug 3, 2018
    Member:
    #261584
    Messages:
    10,645
    Gender:
    Male
    First Name:
    Ed
    Fontana, CA
    Vehicle:
    2006 Tacoma Regular Cab 2.7l 4x4
    King + Archive Relocation Wheeler's bumps +hydros
    Why stop at gas?

    Take the floor mats out.
    Remove the spare tire
    Take the spare tire toolkit
    remove the cabin air filter
    drain the windshield washer fluid
    take all the headlight, turn, and running light bulbs out and trade it in during the daytime.
     
  17. Sep 23, 2022 at 12:35 PM
    #37
    2015WhiteOR

    2015WhiteOR Well-Known Member

    Joined:
    Feb 2, 2015
    Member:
    #147773
    Messages:
    1,087
    Gender:
    Male
    Gainesville TX
    lmao
     
  18. Sep 23, 2022 at 12:46 PM
    #38
    TacoTyusday

    TacoTyusday Well-Known Member

    Joined:
    Oct 30, 2019
    Member:
    #309472
    Messages:
    1,281
    Gender:
    Male
    First Name:
    Zac
    San Diego
    Vehicle:
    2014 White Tacoma TRD Baja
    All that effort and you don't even suggest that he takes the airbags for spares? smh if you're gonna do something, do it right!
     
    whatstcp and reallifedog like this.
  19. Sep 23, 2022 at 1:19 PM
    #39
    RWL

    RWL [OP] Member

    Joined:
    Dec 21, 2017
    Member:
    #239074
    Messages:
    17
    Gender:
    Male
    Vehicle:
    2007 Tacoma 4x4
    Trailer hitch
    Not any more. I forget what year the government mandated it, but all fillers now have a valve in them to prevent the fuel from draining out of the tank in a rollover and that blocks the siphon tube.
     
  20. Sep 23, 2022 at 1:29 PM
    #40
    RWL

    RWL [OP] Member

    Joined:
    Dec 21, 2017
    Member:
    #239074
    Messages:
    17
    Gender:
    Male
    Vehicle:
    2007 Tacoma 4x4
    Trailer hitch
    For proof of concept I just wanted to verify that jumping pins 3&5 on the C-OPN relay works. The fuel pump activated and fuel started flowing. The 20A EFI fuse is the one that controls the pump and I used that as my under the hood switch. The procedure is remove C-OPN relay and jump pins 3&5 [the stem of the 'T'], remove 20A EFI fuse, turn on ignition. Put fuse back in and fuel pump is activated. It took a few seconds until I started to see the fuel coming up in the hose. Photo below. You can see a few bubbles in the tube. Thanks to all with experience who added their knowledge to the discussion.
    19 C-OPN correct relay bridged - Correct 20A fuse removed (Large).jpg
     
    whatstcp likes this.

Products Discussed in

To Top